Well this should bring a smile to your face of a Monday. Michael J. Fox aka Marty McFly and some of his fellow co-stars in the iconic 'Back to the Future' movies reunited over the weekend at Fan Expo Boston.

Joining Fox was his partner-in-crime Christopher Lloyd, who played Doc Brown, as well as Thomas F Wilson (Biff Tannen) and Lea Thompson (Lorraine Baines/McFly).

There they all are now...

Lea Thompson tweeted the same picture with the caption: "Friends from the past in the future! @FANEXPOBoston So fun. Love these men."

It's been 33 years since the first 'Back to the Future' movie, with two more films added to the trilogy in 1989 and 1990 respectively. The cast previously reunited back in 2015 to mark the movie's 30th anniversary.

The cast chatted about the famous movie in a panel discussion and also addressed any rumours of a fourth installment with Thomas Wilson telling the crowd: "Basically, I think America is saying, 'Come on they’ve wrecked every other franchise with bad sequels, why not this one?' C’mon, we would watch it until it sucks."

However it is out of their hands with Michael J. Fox saying that co-creator Bob Gale is the ‘gatekeeper of the franchise’. The actor also talked about the impact the movie had on him when it was released saying: "My life was just a blur. When the movie came out, it shocked me 'cause I had no idea what it was going to be, because I had no chance to live with it. It just happened overnight."

It was Lea Thompson's words that earned one of the biggest cheers from the audience however when she addressed the trilogies true meaning saying: "This movie was so powerful to show to your children because it’s the idea that if you do the right thing, if you have the courage, if you stand up for yourself at the right moment of your life, you can change not only your future but your children’s future."

No, YOU'RE crying.